42491727 has 6 divisors (see below), whose sum is σ = 61376952. Its totient is φ = 28327812.

The previous prime is 42491719. The next prime is 42491737. The reversal of 42491727 is 72719424.

It is not a de Polignac number, because 42491727 - 2³ = 42491719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42491691 and 42491700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42491717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2360643 + ... + 2360660.

It is an arithmetic number, because the mean of its divisors is an integer number (10229492).

Almost surely, 2^42491727 is an apocalyptic number.

42491727 is a deficient number, since it is larger than the sum of its proper divisors (18885225).

42491727 is a wasteful number, since it uses less digits than its factorization.

42491727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721309 (or 4721306 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 42491727 is about 6518.5678641861. The cubic root of 42491727 is about 348.9539570844.

The spelling of 42491727 in words is "forty-two million, four hundred ninety-one thousand, seven hundred twenty-seven".